-7-21=7

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Solution for -7-21=7 equation: 


Simplifying
-7 + -21 = 7

Combine like terms: -7 + -21 = -28
-28 = 7

Solving
-28 = 7

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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